Some recent reports indicate that Nvidia is finally, truly done making GTX graphics cards, with the last GTX 16-series cards leaving the fab. Seven years after the company followed up its incredibly successful GTX 10-series with the rebooted RTX branding, how has the PC gaming landscape changed? Did ray tracing make the splash that Nvidia hoped for? PCWorld’s Keith May is here to answer those questions in his latest video essay on our YouTube channel. The switch to the RTX 20-series and its follow-ups are famous (or infamous, if you prefer) for two things. One, Nvidia’s push for making real-ti…